/**
 * Copyright 2010 - 2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrains.exodus.core.dataStructures.persistent;

import jetbrains.exodus.core.dataStructures.hash.LongIterator;

public interface PersistentLongSet {
    ImmutableSet beginRead();

    PersistentLongSet getClone();

    MutableSet beginWrite();

    interface ImmutableSet {
        boolean contains(long key);

        LongIterator longIterator();

        boolean isEmpty();

        int size();
    }

    interface MutableSet extends ImmutableSet {
        void add(long key);

        boolean remove(long key);

        boolean endWrite();
    }
}
